<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>1_验证Diffing算法</title>
</head>
<style>
</style>
<body>
  <!-- 准备好一个“容器” -->
  <div id="test"></div>
  <!-- 引入react核心库 -->
  <script type="text/javascript" src="../js/react.development.js"></script>
  <!-- 引入react-dom 用于支持react操作DOM -->
  <script type="text/javascript" src="../js/react-dom.development.js"></script>
  <!-- 引入babel 用于将jsx转换为js -->
  <script type="text/javascript" src="../js/babel.min.js"></script>

  <script type="text/babel">  // 此处一定要写babel

    // 1. 创建组件
    class Time extends React.Component {

      state = {data: new Date()}

       // 组件挂载完毕的钩子
       componentDidMount() {
        setInterval(() => {
          this.setState({data: new Date()})
        }, 1000)
      }


      // 初始化渲染、状态更新之后
      render() {
        return (
          <div className="list" ref="list">
            <h1>hello</h1>
            <input type="text"/>
            <span>现在是：{this.state.data.toTimeString()}</span>
          </div>
        )
      }
    }

    // 2. 渲染虚拟组件到页面
    ReactDOM.render(<Time/>, document.getElementById('test'))

  </script>
</body>

</html>